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Alternative windows plugin for black to white gradient



  • Hello guys,

    does anyone have a suggestion for a windows equivalent to CI smooth linear gradient?
    What I need is a gradient generator, what is capable of generating an white to black gradient and change its width and position.

    I need this to achieve a smooth fade between two videos which are positioned side by side. With the help of the alpha mask actor I can have a blend like combination of both, instead of a hard edge.

    Thank you for any advise
    Dill


  • Tech Staff

    The first two look like they could work:

    https://www.shadertoy.com/resu...



  • Thank you Skulpture,

    I already thought about GLSL and had a look at these. But I'm pretty new to shaders. Going to try it and fiddle around with them though.
    Anyways it would be a great advantage to have a native actor like the CI gradient. Tried around a bit with it and in combination with alpha, it could even solve the so long requested flexible soft edge issue!

    While writing this, I recognise, that I was wrong in my description. What I need ist a gradient from white to transparent. With the CI gradient, one can use the colour picker and just slide down the opacity.
    Why isn't this possible with the default gradient actor?

    Best
    Delil


  • Tech Staff

    @DillTheKraut

    create a black to white gradient and add it as the alpha channel to a video stream.
    Use the "Add Alpha Channel" actor. It will use the BW gradient as the mask input and will create the alpha on the video input channel.|
    If you want Black to alpha you just need to run a "Background Color" actor in as the video input.



  • hello DusX,

    I already achieved that on OSX with ci gradient. Works like a charm. But I need the same for a project where a Windows server is used. No OSX, no ci. There doesn't seem to be a equivalent to the ci actor.

    Best

    Dill


  • Tech Staff

    @DillTheKraut

    There is a gradient FFGL included in the FFGL SDK. (creates a color to color gradient horizontally, I don't think black is an option.)

    SITE: http://community.freeframe.org...

    Direct: https://sourceforge.net/projec...

    The direct link should download the zip from sourceforge.

    In the zip, open Binaries, then win32. In there are a few FFGL plugins, including a FFGLGradients

    Also, the FFGL bundle from Troikatronix may have a gradient plugin (I think it does, but can't check currently)

    https://troikatronix.com/files...

    Now I don't know if these are equivalent to the CI actor, but they probably provide some options. GLSL may be both your best option and best performing.



  • Thanks DusX,

    The FFGL does hue only.

    Anyways, I'm wondering why this isn't already standard. It would do the edge blending what was asked now and then very well.

    Best

    Delil


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